Rotary purifier for paper-pulp and the like.



0. VIGREUX. ROTARY PURIFIER FOR PAPER. PULP AND THE LIKE.

APPLICATION FILED OUT. 11, 1911.

Patented Nov. 26, 1912.

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0. VIGREUX. ROTARY PURIFIBB. FOR PAPER PULP AND THE LIKE. I

APPLICATION FILED OUT. 11, 1911.

1,045,476. 7 Patented N0v.26, 1912.

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C. VIGREUX.

ROTARY PURIFIBR FOR PAPER PULP AND THE LIKE.

APPLICATION FILED 001.11, 1911. l

1 45,476. Patented Nov. 26, 1912.

3 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH cc wAspflNG'wN, D. c.

CHARLES VIG-REUX, 0F BALESMES, FRANCE.

ROTARY IPU'RIFIER FOR PAPER-PULP AN D THE LIKE.

Specification of Letters Patent.

Patented Nov. 26,1912.

Application filed October 11, 1911. Serial No. 654,058.

To all whom it may concern.

Be it known that I, CHARLES VIcRnUx, civil engineer, a citizen of France, residing at Balesmes, Indre-et-Loire, in the Republic of France, have invented new and useful Improvements in Rotary Purifiers for Paper-Pulp and the Like, of which the following is a specification.

This invention relates to rotary purifiers for paper pulp and the like.

In the manufacture of paper it, is necessary to purify the pulp before it reaches the paper-making table in the paper-making machine[ For this purpose three kinds of purifiers have been employed hitherto. These are 1, the fiat purifiers which have the advantage of utilizing completely the purifying surface but have also the disadvantage of being impossible to be cleaned during work, being very heavy'a'nd very bulky; 2, polyhedral or cylindrical rotary purifiers which have the of being cleaned during work, but have also the disadvantage of an incomplete utilization of the purifying surface, and consequently of being expensive and bulky. Moreover in order to cause the fibers'to pass through the strainer plates, violent shocks are imparted to this type of apparatus whereby the strainer plates are rapidly deteriorated and finally, 3, apparatus with bellows formed by flat strainer surfaces on which the straining of the pulp is facilitated by agitators with vanes, in combination with shocks also imparted to the strainer surfaces.

This last type of apparatus has scarcely any advantage over the other two types hereinbefore mentioned; it is expensive, and although it may remedy to a slight degree the disadvantages of the said other two types, it retains however these disadvantages in part.

Now a rotary purifier according to this invention is designed to unite in one apparatus the advantages of all the types of purifiers known hitherto and more particularly of flat purifiers and rotary purifiers, while avoiding the disadvantages which are enumerated hereinbefore. V

The improved rotary purifier consists substantially of a series of strainer plates joined together to form an endless chain which is adapted to plunge into atrough so as to divide the latter into an inner coirpartment for receiving. the pulp to be purified, and an outer compartment advantage of being capable for receiving the pulp after it has been purified by passing through the strainer plates. The endless chain composed of these strainer plates has imparted to it a very slow rotary motion. It allows of utilizing a very large proportion of the straining surface, and also allows of the plates being cleaned.

One construction of a purifier according 0 this invention is illustrated by way of example in the accompanying drawings in which- Figure l is a front elevation of the purifier. Fig. 2 is a side elevation in half section on the line MN of Fig. 1. Fig. 3 is a plan thereof.

As shown,

the apparatus comprises a ointed chaln b composed of perforated plates like the plates of the ordinary pulp purifiers. These plates are made of copper, brass or any other metal, and they are jointed to one another in any suitable or known manner. The chain 6 is supported at its upper portion by a revolving polygonal drum 0 on which the plates are adapted to rest and which drives the jointed chain by imparting .continuous rotary motion to it. At its lower end, the chain 6 passes around a drum 0 similar to the drum 0. This drum 0 is itself driven by known mechanism, for instance by a pulley r fixed on a shaft 7 mounted in bearings g fixed on a cast iron trough a into which the chain 6 plunges. The lower drum 0 is also rotated from the shaft 7 through a transmission chain 10.

Rubber bands a a are fixed on the longitudinal edges of the chain 7). They are each provided with a longitudinal slot into which extends an angle iron bar 11 fixed to the trough a and making with the rubber band a tight joint in such a manner as to divide the trough into two distinct compart ments situated, one inside and the other outside of the plate chain 6.

The pulp is supplied into the trough a, namely inside the plate chain by a charging chute 72/ which is mounted on a support is and is readily dismountable for cleaning, so that more than half of the plate chain constituting the purifier proper is actually utilized for purifying. By making the part of the chain which plunges into the trough, longer thanthe part which emerges there from, an increasing strainer area may be obtained in proportion to the total surface of the chain. After passing from the inside to the outside through the strainer plates, the strained pulp passes out of the trough through a spout t which may be provided on one edge only, or on both edges ,of the trough. The purified pulp may also pass out through the lower pipe gwhich is connected by means of a pipe 12 to the chute receiving the purified pulp from the spout 6. Upon the end of the pipe 3 is mounted a drain cook 13 for use in cleaning the trough. The pipe 12 is provided with a regulating throttle valve 1%.

For facilitating the operation, that is to say, the passing of the pulp through the strainer plates, the apparatus is provided with a bell f of large capacity mounted in the trough a inside the chain. This bell which consequently reduces the volume of the pulp contained in the apparatus, is furnished with two vanes e at its lower part and it is rocked on its axle :2 by means of a lever Z connected by a connecting rod 3 to an oscillating lever or link 6 connected at its upper end to a wrist pin in the crank plate This crank plate 72 is carried by a shaft m receiving motion from a pulley s. The amplitude of the rocking motion of the bell f is regulated during the working of the apparatus by shifting the connecting rod in the oscillating lever or link 0.

The cleaning of the strainer plates is effected from the inside toward the outside by a water sprinkler 2'. The cleaning from the outside to the inside is effected by a sprinkler a, the products of this cleaning operation being received by a chute-or gutter 0. Four manholes g provided in the wall of the trough (1. allow of cleaning.

Various detail modifications may obviously be made in the hereinbefore described construction without departing from the nature of the invention.

The improved apparatus is suitable not only for the straining of paper pulp, but also for the purifying of all materials which are capable of being strained through ordinary strainer plates.

Having now described my invent-ion, what I claim as new and desire to secure by Letters Patent is:

1. In a rotary purifier for paper pulp and the like, the combination of strainer plates pivotally jointed together, packing means carried by said plates, a trough through which said plates are adapted to pass, means carried by the trough for engaging said packing means and forming therewith a tight joint to divide the trough into a plurality of compartments, means for supporting said strainer plates and means for causing the material tobe purified to pass through said plates, substantially as described and for the purpose set forth.

2. In a rotary purifier for paper pulp and the like, the combination of strainer plates pivotally jointed together in the form. of an endless chain, packing'means carried by said plates, means for imparting to said chain a slow rotary motion, a trough in which the said chain dips, means on said trough for forming with said packing means a tight joint so as to divide the interior of the trough into two separate compartments, means for feedingthe pulp to be purified to one of the compartments and means for discharging the purifiedpulp from the other compartment, substantially as described and for the purpose set forth.

3. In a rotary purifier for paper pulp and the like, the combination of strainer plates pivot-ally j ointed together in the formof an endless chain, drums for supporting said chain, means for imparting to the drums a slow rotary motion, a trough in which said chain dips and against it works with atight joint so as to divide the interior of the trough into two separate compartments, means for. feeding the pulp to be purified to the compartment inside the endless chain, a bell in said compartment, saidv bell being provided with vanes, means for. imparting to the bell a rocking movement for the purpose of facilitating the passing of the material through the strainer plates and means for discharging the purified material'from the compartment outside the endless chain, substantially as described and for the purpose set forth.

4:. In a rotary purifier for paper pulp and the like,

endless chain, drums for supporting said chain, means for impartingto the drums a slowrotary motion, a trough in which said chain dips, rubber bands fixed on the sides of the chain, saidibands having each a longl- V tudinal slot, angle iron bars fixed to the inner Wall of the trough and extending into thelongitudinal slots of the bands, whereby the interior of the trough is divided into two separate compartments, means for feeding the pulp to be purified to one of the compartments and means for discharging thesides of; which V.

the combination of strainer plates pivotally jointed together in the form of an the purified pulp from the other compartment, substantially the purpose set forth. 7 V

5. In a rotary purifier for paper pulp and the like, the combination of strainer plates pivotally ointed together in the form of an endless chain, drums for supporting said. chain, means for imparting to the drums a slow rotary motion, a trough in which said chain dips, rubber "bands fixed on the sides of the chain, said bands having each a longitudinal slot, angle iron bars fixed to the inner wall of the trough and extending-into the longitudinal slots of the bands, whereby the interior. of thetrough is divided into two separate compartments, means for. feeding the pulp, to be purified to the compartment inside the endless chain,

as described and for a bell in said compartment, said bell being provided With vanes, means for imparting to the bell a rocking movement for the purpose of facilitating the passing of the material through the strainer plates, a Water sprinkler inside the chain, a second Water sprinkler outside the chain, means for causing the Water sprinklers to project Water the compartment outside the chain, substantially as described and for the purpose set forth.

In testimony whereof I have signed my 15 name to this specification in the presence of two subscribing Witnesses.

CHARLES VIGREUX.

on to the chain when cleaning the same, and lVitnesses:

means for discharging the purified material AN'roINE LAVOIX,

at the top and bottom of the trough from H. C. COKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

